Welcome to another installation of This Week in Spring! This week I'm going to be in Los Angeles, talking to developers at Disney about Spring. If you're in the area, I'd love to see you all there, too. We're hosting a user-group meeting on December 11th. Here are some details on the event, which takes place tomorrow! I look forward to seeing you there!

Can you believe we're already staring down the end of the year? @_@

That means it's time for the annual release of Spring Framework, 4.0! We look forward to your feedback on the release.

1. Don't miss the Spring Framework 4.0 launch webinar, "Introduction to Spring Framework 4.0", with none other than Juergen Hoeller, on Jan 9th, 2014, first major Spring Framework release since 2009!
2. Be sure to check out the webinar by busiest guy in code-business and Spring Security lead Rob Winch on Jan 16, 2014 to hear about Spring Security 3.2.
3. Spring Framework committer and co-lead of Spring Boot Phil Webb introduces Spring 4's new support for Java generics in Spring 4.
4. Thomas Darimont introduces what's new in Spring Data MongoDB 1.4 M1, including the phenomenal new projection framework and SpEL integration.
5. If you're a user of the Spring-powered Broadleaf e-commerce engine, then you might want to register for the v3.1 web event.
6. Our pal Tobias Flohre is back with yet another awesome post, Batch processing and the Java Enterprise Edition (JSR-352, JEE7, Spring Batch). The title speaks for itself - its a good quick overview of where the technologies sit.
7. And, Petri Kainulainen is back at it again with an awesome followup to his series on adding social features to a Spring MVC Web Application with Spring Social. This post is on unit testing that integration.
8. The @GoPivotal blog has an interesting case study of RabbitMQ's deployment at Norwegian Broadcast corporation.

9. Speaking of Phil Webb and Rob Winch, one of the amazing things included in last week's announcement of Spring Framework RC2 was their wonderful addition of a "bill of materials" Maven POM: spring-framework-bom. Use it like this:

   <dependencyManagement>
       <dependencies>
           <dependency>
               <groupId>org.springframework</groupId>
               <artifactId>spring-framework-bom</artifactId>
               <version>4.0.0.RC2</version>
               <type>pom</type>
               <scope>import</scope>
           </dependency>
       </dependencies>
   </dependencyManagement>
   

   Then, simply import the version of the Spring dependency that you want without specifying the version in your pom.xml.

10. There's another case study on the GoPivotal blog, this on now Hulu scaled serving 4 billion videos using Redis. That's awesome!

11. Sudhir Dharmadhikari put together an interesting post on using Spring Roo's aspect approach the AndroMDA project
12. Bozhidar Bozhanov, who I loved getting to see again last week in Sofia, has moved the Spring Social Google+ code to GitHub.
13. 

Last but not least, It's Pivotal day at Manning!  

All Spring and Groovy books half price on special deal days, to celebrate the Spring Framework 4.0 launch, Pivotal is sponsoring Spring and Groovy day in Manning's Countdown to 2014! On certain deal days like Monday Dec 9,10; Thursday Dec 12, 13; Monday Dec 23, 24; and Thursday Dec 26, 27, you can get any of Manning's Spring and Groovy books for half off-eBook, pBook, or MEAP. Just go to Manning.com and choose any (or all) of these selected books. Enter gpivdotd13 in the Promotional Code box when you check out to get the discount. BONUS: If you register for Manning's Countdown to 2014, you'll have a chance to win one of two eBooks given…

Speaker: Pieter Humphrey (Martin Lippert)

A walk through of the new spring.io getting started guide, importing a spring.io guide into STS, building a simple, parameterized, robust REST web service in about 6 minutes using Spring Boot, Spring Tool Suite, and Spring Framework 4.0 Follow along at: https://spring.io/guides/gs/rest-service/

Learn more about Spring Tool Suite at http://www.spring.io/tools

Learn more about Spring Boot at http://projects.spring.io/spring-boot

Learn more about Spring Guides at http://www.spring.io/guides

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Speakers: Yann Cébron (JetBrains) and Josh Long (Pivotal)

In this webinar, Yann Cébron (JetBrains) is joined by our guest Josh Long (Pivotal). Together, they will highlight the new features for Spring support included in these major releases that will help you to be more productive. We will be performing hands-on demonstrations so you'll be able to pick up some useful productivity tips & tricks for your daily work. Last but not least, we will share some insight into future plans for Spring support in IntelliJ IDEA. IntelliJ IDEA 13 will be released in early December, and Spring 4.0 is just around the corner too. Don't miss this opportunity to see and hear about the latest features and have your questions answered on the spot.

!{iframe width="420" height="315" src="//www.youtube.com/embed/L7p3wzujAOA" frameborder="0" allowfullscreen}{/iframe}

Speakers: Pieter Humphrey (Martin Lippert)

A short demo of building a Spring Boot runnable REST service, with Actuator support, as a Java Application in just a few seconds. Then we show enhancing it with a simple Hello World data structure and showing "Hello World" string return values to your browser, and a quick tour through Spring Boot's Actuator features.

Learn more about Spring Tool Suite at http://www.spring.io/tools

Learn more about Spring Boot at http://projects.spring.io/spring-boot

Learn more about Spring Guides at http://www.spring.io/guides

!{iframe width="420" height="315" src="//www.youtube.com/embed/47xNBNd-LLI" frameborder="0" allowfullscreen}{/iframe}

In celebration of Spring Framework 4.0 launch, Pivotal is excited to sponsor Manning's "Countdown to 2014" and their "Day of Spring / Groovy / Grails", a joint promotion with Manning Publications where we offer 50% discounts for specific days, on books that are hand-picked by the Spring, Groovy, Grails folks at Pivotal. Manning is also making an additional offer to anyone that purchases the Deal of the Day - they are automatically entered to win one free copy of an eBook and one chance to win an iPad mini!

Monday, December 9 - MEGA DEAL - 50% off pBooks, including Spring Day / Groovy Day books listed below. Code: gpivdotd13

All codes are good for 48 hours.

You read excerpts from books online for free by clicking on the links below. We hope you enjoy the deals!

Speaker: Rob Winch

Spring Security is a powerful and highly customizable authentication and access-control framework and is the de-facto standard for securing Spring-based applications. Whether you are itching to learn how to use Spring Security for the first time or you want to learn about all the new features in Spring Security 3.2 this presentation is a must.

In this talk Rob, the Spring Security project lead, will take you on a guided tour of how to get up and running with Spring Security 3.2's new features including:

• Java Configuration support
• CSRF protection
• Security related HTTP response headers
• Spring MVC integration

Thursday, January 16, 2014 3:00pm GMT Time (London, GMT) Register

Thursday, January 16, 2014 10:00am PST (San Francisco, GMT-08:00) …

Speaker: Juergen Hoeller

The Spring Framework re-invented enterprise Java in the last decade. Together with the rest of the upcoming Spring IO micro platform, a new Spring Framework generation will power the next decade of JVM-based innovation.

Join Juergen Hoeller to learn about Spring Framework 4.0, its refined annotation-based component and configuration model, and how it relates to Java 8, Java EE 7, Groovy, WebSockets, as well as Spring Boot and Spring Integration.

Thursday, January 9, 2014 3:00pm GMT Time (London GMT) Register

Thursday, January 9, 2014 10:00am PST (San Francisco, GMT-08:00) …

As the first milestone of the Spring Data release train Codd has now cooled down a little bit, I'd like to highlight some of the new features shipped with the MongoDB module.

SpEL support for projections in aggregation framework

Sometimes it can be pretty complicated to define arithmetic expressions within MongoDB aggregation framework projections.

Assume a part of an aggregation for an order is the gross price of it, effectively calculated using the following formula: (netPrice * discountRate + fixedCharge) * taxRate. With a discount rate of 0.8, a fixed charge of 1.2 and a tax rate of 1.19, the according DBObject to encode this formula with the MongoDB aggregation…

With the recent RC2 release of Spring Framework 4.0; and GA due before the year's end, here is a little teaser of some of the changes that should improve your life if you work with Java generic types.

Spring has had pretty good Java generics support for a while. For example, with version 3.2 you can easily inject all beans of a specific type into a generic List just by using the @Autowired annotation:

@Autowired
private List<MyType> beans; 
// all beans that extends MyType will be injected

Spring's conversion service, binding system and Web MVC framework are all 'generic aware' and there are also the handy GenericCollectionTypeResolver and GenericTypeResolver…